Coupler for fans



FIG. 1 is a perspective view of a coupler for fans with the right handlatch in an unlocked position;

FIG. 2 is a right elevation view thereof; the left side elevation viewbeing a mirror image;

FIG. 3 is a top plan view thereof; the bottom plan view being a mirrorimage; and,

FIG. 4 is a front elevation view thereof; the back elevation view beinga mirror image.

The ornamental design for a coupler for fans, as shown and described.